Density measuring balance



FIG. 1 is a front elevational view of a density measuring scale showing my new design, the rear being substantially a mirror image thereto;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a left side elevational view thereof. 

The ornamental design for density measuring balance, substantially as shown and described. 